Island



F. WATSON 11 W. MOULDING. 1 AUTOMATICALLY CONTROLLED SECURING 0R LOCKINGDEVICE FOR SAFEGUABDING MACHINERY.

APPLICATION FILED IEB.24, 1908.

998,866. Patentd July 25,1911.

2 SHEETS-SHEET 1.

5%, Z mm arm/Mont COLUMBIA PLANOGRAPH 60., WASHINGTON. D 6.

F. WATSON & W1 MOULDING. AUTOMATICALLY CONTROLLED SECURING ORLOGKINGDEVIOE FOB. SAFEGUARDING MAGHINERY.

' APPLICATION FILED T11R24, 1908.

998,866, Patented July 25, 1911.

2 SHEETS-SHHBT 2.

COLUMBIA PLANOGRAPH c0. WASHINGTON. D. c.

UNITED STATES PATENT OFFICE.

FIELDEN WATSON AND WILLIAM MOULDING, OF CSWALDTWISTLE, ENGLAND, ASSIGN-ORS TO HOWARD & BULLOUGH AMERICAN MACHINE COMPANY, LIMITED, OF PAW-TUCKET, RHODE ISLAND.

AUTOMATICALLY-CONTROLLED SECURING 0B LOCKING DEVICE FOR SAFEGUARDINGMACHINERY.

To all whom it may concern:

Be it known that we, FIELDEN Larson and WILLIAM MOULDING, subjects ofGreat Britain, residing at Cswaldtwistle, in the county of Lancaster,England, have invented, a new and useful Improvement inAutomatically-Controlled Securing or Locking Devices for SafeguardingMachinery, of

which the following is a specification.

This invention, generally speaking, belongs to the art of lockingdevices, and it particularly pertains to a new and useful automaticlocking device, especially designed for use upon closures of incasementsof starting or change mechanism or machinery.

The invention contemplates for its prime object the provision of anautomaticallycontrolled securing or locking device for use uponsafeguarding machinery, at all times and under various conditions, inorder that, when the machinery is rotated, changes or adjustments in themoving parts are prohibited, thereby preventing improper op eration ofall inclosed moving parts.

A further object of the invention resides in improved means whereby theclosure of the incasement or cover is locked or secured, and cannot beopened or removed while the machine is in motion.

The invention is applicable to any desired part of the machine, asherein set forth and shown in the drawings; that is to say, to any partor parts it will conveniently operate; but, in the present disclosureand showing, it is applied to the stripping cover of the revolving flatcards. I

The invention comprises a push bar having a hinged angular arm adaptedto abut against a shouldered spring latch, which may be carried by anystarting handle, rod, lever, cover guard or other mechanism; in thisinstance being shown as being carried by the locking bar.

Figure 1 is a side elevation of the machine, showing the inventionapplied thereto and cooperating with the fiat card. F lg. 2 is a planview of Fig. 1. Fig. 3 is a side elevation of the mechanism forcontrolling the closure of the incasement. Fig. 4 is a front elevationof Fig. 3. Fig. 5 is a top plan view of Fig. 3, showing the permanentSpecification of Letters Patent.

Application filed February 24, 1908.

Patented July 25, 1911.

Serial No. 417,356.

casing 12 in section. Fig. 6 is a perspective view of the stra forkmechanism, adapted to operate in oon unction with the invention. Fig. 7is an enlarged elevation of a portion of Fig. 1. Fig. 8 is a perspectiveview of the structure shown in Fig. 3. Fig. 9 is a perspective View ofthe angular arm 4 and the spring projection 9. Fig. 10 is a perspectiveview of the push bar 1. Fi 11 is a perspective view of a portion 0 thecarrying bracket 2. Fig. 12 is a perspective View of a section of thelocking bar 6, showing the shouldered spring latch 5. Fig. 13 is aperspective view of the push bar 1, as

shown in Fig. 10, with the exception that the upper portion is moreminutely illustrated.

In the drawings: 1 denotes a manually operated push bar, so mounted asto move in a suitable carrying bracket 2, which is suitably secured tothe machine by bolts orv other means 2 as shown in Figs. 1 and 2. Thispush bar coperates with a suitable spring 3, in order that it willrevert to what may be termed its outward position when not held manuallyto its inward position.

Hinged or fulcrumed at 4 and upon the push bar is the angular arm 4,and, when the push bar is manipulated, the said arm will contact or abutagainst the shouldered spring latch 5, suitably carried by the lookingbar 6; that is to say, when the said angular arm is in the positionshown in full lines in Fig. 3, and also in Figs. 4, 5 and 8. This arm isprovided with a spring projection 9, shown in the drawings as a flatspring having its extremity curved, as indicated by the numeral 9 Whenthe push bar 1 is manually operated, the spring rojection frictionallycontacts, because 0 its disposition, with the revolving card cylinder10. The revolving cylinder, in this instance,

is the moving member of the machine, and

theangular arm l, to move in 'order toco'ntact with the said shoulderedspring latch 5.

The locking bar 6, at one'end, is'provided with a recess 14, Fig. 2,whichengages the lug 7 upon the hinged or pivoted stripping closure 8,which is pivoted at 13 to the frame of the machine, as shown ih Figs. 1and 2. The end portion of the locking bar, that carries the shoulderedspring latch, moves through anopenin-g 2 of the bracket Q and,

when the closure 8 is in the position shown in full lines, Fig. l, theshoulder 5 of the said latch engagesthe downwardly extend 1 ing portion2 of the-sa1dbracket,so asto' securely holdfthe closure locked. The downwardly projecting portion 4 of the arm t o eratesthrough the opening 1of the 'push bar; that is, when it is oscillated bythe 're volving card.The pushbar is'guided upon the bracket 2, by 'meanso'f the flanges 29The push bar is hollowedout, as shown aft 1*, in which the spring 3 islocated. v Said spring 3 isdisposed between one'end of said hollowedoutportion andthe pinor belt "13} which is threaded into the bracketQ.This pin or bolt 1? is provided with an ei'ilarge ment 1 which coversthe slot 1 "the pur-l pose of which slot is to allowthe push'ba'r to beoperated.

Should the [push 'b'ar be operated, inanul u ally or otherwise, whilethe cylinder or ie H volving card 10 is'inmotiom'thespring .pro-" Ijection '9 will contact 'withisaid cylinder or 1 "card 10, therebytilting the angular arm the angular arm falls toits normal position.

and rendering it: impossible to release Ythe locking bar, by thedisengagement of the "shoulder 5 of the spring latch 5 and thedownwardly extending portion 2. When pressure upon the bar 1 is removed,thej spring 3 returns to its original'position, and

Accessmayonly be hadto the push bar,be-

cause it: is the only proper manually op- 'erative part of the device;that is to say, upon the exterior of the casing 12.

"When the machinery or cylinder or re-i vol'vingcard is at rest andpressure is applied tothe push bar, the spring projectidn will engagethe card 10 (which is not revolving'at the time being) and will not, ofcourse, tilt the angular arm.

In this resp'ect, the downwardly projecting portion? l will operate thesl'i-ouldered spring'lateh 5, order'to release the locking'bar 6, sothat the closure 8 may be opened.

The strap fork 11' is designed to slide upon the carrying rod or bar 15,and the strap forlr is held in a horizontal position by'the' pin 16bearing upon the edge of the fixed guide or member 17.

The lever 18 radiates from the'sleeve 18 which is fulcr'umed upon therodor bar] The saidlever 18 is automatically"operated when the closure 8 isopened by means of the rod 19, which is connected to the lever 18 and tothe closure '8. Protruding from the lever-18, is an elongated lug 20,which, when the strap fork is over the loose pulley and the closure isopened, is brought into the path of one of the two lugsprojecting fromopposite sides of the strapdork, thereby preventingthefork from beingmoved onto the faSt pulley so long as the closure is open.

It is obvious that when the closure is in the position shown in fulllines in Fig. 1 it is securely locked by the bar 6, and cannot beliberated without applying pressure upon the bar 1. Pressure upon thebar 1 is only effective when the cylinder or card is stationary. "Notuntil the "elongated lug 20 is removed, fro'm'the 'pathof the strap forkis "it possible to 1'nove'the belt (not shown) in cooperation with the"fast pulley 21. The lug 20 is'automaticallyremoved by the closing ofthe closures. I

'Having thusTfully 'described the invention 'whatis claimed as newand'useful is 1. "In a locking'deviceforclosures of inc'asements, alocking bar to secure the closure against movement, aspring latchcarried by saidbar, a pushbar, an angulararm carried by said push bar"for engagement with said latch, and means carried by said angular armfor engagement with a 'r'evolvmg part of the machine, whereby said an-"gular arm is incapable of operation "during motion of said revolving part. I

.2. "In combination witha machine incase- 'inentfand closure a lockingbar 'to secure s'aidclosure against movement, a push bar,

an angulararm pivotally carried by said push bar to-engage saidlocking"bar and ,-provided with'a Spring'prOjeCtion to engage 'a"revolvingp'art'ofth'e machine to prevent ing bar, "and a spring projection havinga craved portion carried by said arm adapted for engage-ment'with amovablepa'rt'ofthe machine to preventoperationof said angular arm. a

4L. Inc'onibination withtheclosure of a machine casing, a carrying rodhaving a leverfjournaled thereon,'a strap fork jour- -naled on thecarrying rod, said lever having a connection with the "closure and beingoperated when the closure is opened, means on saidilever adapted to bebrought into the path or said strap fork to prevent *Inove- -mentof thelatter when-saidclosure is in its" open position, locking meansto-holdsaid closure againstmo'vement, and means to re- "lease saidlocking-means when arevolving part of the machlne 1s at rest, saidlastnamed means having means to engage sale] revolving part when saidrevolving part is in motion, to prevent the locking means from beingreleased.

5. In combination with the closure of a machine casing, a push barhaving an angular arm movable thereon, a locking bar connected with saidclosure and designed to secure the same against movement, said angulararm being arranged for engagement with said locking bar to release thesame to unlock said closure, and means borne by the angular arm andhaving a part thereof adapted to engage a revolving part of the machine,whereby said angular arm is rendered inoperative until said revolvingpart is in a state of quiescence.

6. In combination with a machine cover, a carrying rod, and a strap forkon said carrying rod, means carried by the carrying rod and adapted tobe brought into the path of the strap fork to secure the latter againstmovement, means connecting the firstnamed means with the cover tooperate said first-named means when said cover is opened, a push bar, alocking bar connected with said cover, and means pivoted to the push barand arranged for engagement with the locking bar, to release the same,said pivoted means having a part thereof adapted to engage a revolvingpart of the machine, whereby the pivoted means is rendered incapable ofreleasing said locking bar until said revolving part is in a state ofquiescence.

In testimony whereof we have signed our names to this specification inthe presence of two subscribing witnesses.

FIELDEN -WATSON. WILLIAM MOULDING. Witnesses:

ARNOLD I'SHERVVOOD, JAMES DRAKE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, I). G.

